Email & Messaging Bearer Token

Resend REST API

Modern email API for developers

Resend is a developer-first email API that makes it easy to send transactional and marketing emails. Built with modern web standards, it provides simple HTTP APIs for sending emails, managing contacts, and tracking delivery. Developers choose Resend for its clean API design, excellent deliverability, and comprehensive SDKs.

Base URL https://api.resend.com

API Endpoints

Method	Endpoint	Description
POST	`/emails`	Send a single email with HTML, text, or React components
POST	`/emails/batch`	Send multiple emails in a single API request
GET	`/emails/{email_id}`	Retrieve details about a specific email by ID
PATCH	`/emails/{email_id}/cancel`	Cancel a scheduled email before it's sent
POST	`/domains`	Add a new domain for sending emails
GET	`/domains`	List all verified domains in your account
GET	`/domains/{domain_id}`	Get verification status and DNS records for a domain
DELETE	`/domains/{domain_id}`	Remove a domain from your account
POST	`/audiences`	Create a new audience for managing contacts
GET	`/audiences`	List all audiences in your account
POST	`/audiences/{audience_id}/contacts`	Add contacts to an audience
GET	`/audiences/{audience_id}/contacts`	Retrieve all contacts in a specific audience
DELETE	`/audiences/{audience_id}/contacts/{contact_id}`	Remove a contact from an audience
POST	`/api-keys`	Generate a new API key for authentication
GET	`/api-keys`	List all API keys in your account

Code Examples

curl -X POST https://api.resend.com/emails \
  -H 'Authorization: Bearer re_123456789' \
  -H 'Content-Type: application/json' \
  -d '{
    "from": "onboarding@yourdomain.com",
    "to": "user@example.com",
    "subject": "Welcome to our platform",
    "html": "<p>Thanks for signing up!</p>"
  }'

const response = await fetch('https://api.resend.com/emails', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer re_123456789',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    from: 'onboarding@yourdomain.com',
    to: 'user@example.com',
    subject: 'Welcome to our platform',
    html: '<p>Thanks for signing up!</p>'
  })
});

const data = await response.json();
console.log(data);

import requests

url = 'https://api.resend.com/emails'
headers = {
    'Authorization': 'Bearer re_123456789',
    'Content-Type': 'application/json'
}
payload = {
    'from': 'onboarding@yourdomain.com',
    'to': 'user@example.com',
    'subject': 'Welcome to our platform',
    'html': '<p>Thanks for signing up!</p>'
}

response = requests.post(url, json=payload, headers=headers)
print(response.json())

Use Resend from Claude / Cursor / ChatGPT

Get a hosted MCP endpoint for Resend. Paste your Resend API key, copy back one URL, drop it into Claude Desktop, Cursor, or any AI client that supports remote MCP. Your AI calls Resend directly with your credentials — no local install, works on mobile.

send_email Send transactional emails with dynamic content generated by AI

send_batch_emails Send personalized emails to multiple recipients with AI-generated content

get_email_status Check delivery status and engagement metrics for sent emails

manage_audiences Create and manage contact audiences for segmented email campaigns

verify_domain Add and verify sending domains with DNS configuration assistance

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Resend REST API

API Endpoints

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Code Examples

Use Resend from Claude / Cursor / ChatGPT

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